Display side panel with user mutual servers in direct message chat

I think it would be really nice if the direct message chat had a collapsible side panel in the right that would display the mutual servers and also the roles that user had in that server and give you options to manage the roles in that server if you have the permissions to do so (this could be for the future).

This would greatly ease user management and would also make it evident the mutual servers. In our specific case, we run a company server and sometimes a person leaves the company. This feature will let other users know that they are talking to person in the company server or not and prevent our users to leak any confidential information, for example.

I have attached a crude mockup of what I'm thinking.